RKI Instruments GX-8000(PT0-098) - Manual (Page 27)

4 How to Use 4-7. Air calibration mode
- 27 - GX-8000
NOTE
• Air calibration can be performed even when there is a gas alarm.
• If the air calibration fails, it displays "FAIL" - "AIR CAL" and which sensor
has become faulty. Press the RESET button to reset the fault alarm
(calibration failure). When the alarm is reset, the value before calibration is
displayed.
If CH4 sensor is faulty